04-19-2010, 07:41 AM
I have some problems again, I will highly appreciate if someone could help to solve these.
1st: I’m using General Type Composite section partially, and I defined SRC material and linked to the elements (the whole structure is a steel-concrete composite bridge with partial double composite action) to perform the Design. But I receive the following message when I click the Perform Analysis button: “If a SRC material is used, the section must be a SRC or a corrugated steel web PC section”(the problem is with the general type section), so I have to change the linked material if I want to perform the analysis, however with this modification I can’t execute the Composite Plate Girder Design (without SRC link I get the before-mentioned message:” Load combination data for composite plate girder design has not been entered.”). Does it mean that I can’t use the Design option if I have General Type Composite section?
2nd: Is there any way to change a section of an element in a specified time? I would like to model the cracking of the upper composite slab due to the fist application of the traffic load.
(I defined an orthotropic material to consider the effect of tension stiffening in cracked zone. So I want to change in a specified age the material properties of the upper concrete slab.)
I attached the composite export and model file.
Thank you in advance.
Best regards,
rusty
1st: I’m using General Type Composite section partially, and I defined SRC material and linked to the elements (the whole structure is a steel-concrete composite bridge with partial double composite action) to perform the Design. But I receive the following message when I click the Perform Analysis button: “If a SRC material is used, the section must be a SRC or a corrugated steel web PC section”(the problem is with the general type section), so I have to change the linked material if I want to perform the analysis, however with this modification I can’t execute the Composite Plate Girder Design (without SRC link I get the before-mentioned message:” Load combination data for composite plate girder design has not been entered.”). Does it mean that I can’t use the Design option if I have General Type Composite section?
2nd: Is there any way to change a section of an element in a specified time? I would like to model the cracking of the upper composite slab due to the fist application of the traffic load.
(I defined an orthotropic material to consider the effect of tension stiffening in cracked zone. So I want to change in a specified age the material properties of the upper concrete slab.)
I attached the composite export and model file.
Code:
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Thank you in advance.
Best regards,
rusty
Engineering - the Art of Neglection